SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

An object of mass 10 kg is launched from the ground at  at an angle of  above the horizontal with a speed of 30 m/s. At some time after its launch, an explosion splits the projectile into two pieces. One piece of mass 4 kg is observed at (105 m, 43 m) at  s. Find the location of second piece at s?

a)

(10, 2)

b)

(48, 16)

c)

( )

d)

Information insufficient


Question ID - 100339 :-

An object of mass 10 kg is launched from the ground at  at an angle of  above the horizontal with a speed of 30 m/s. At some time after its launch, an explosion splits the projectile into two pieces. One piece of mass 4 kg is observed at (105 m, 43 m) at  s. Find the location of second piece at s?

a)

(10, 2)

b)

(48, 16)

c)

( )

d)

Information insufficient

1 Answer
5876 Votes
3537

Answer Key : (d) -

(d)

As only the gravity force is acting on the system, the centre of mass of the system follows a parabolic path

At  ,

Let coordinates of the second piece, i.e., 6 kg piece be

Then

Negative value of  shows that the second piece collides the ground before



Next Question :

The effect of todays radioactive fall out will probably be more harmful to children of future generation than to children now living because

1)

Infants are more susceptible to radiations

2)

Susceptibility to radiation increase with age

3)

Mutated genes are frequently recessive

4)

Contamination of milk supply is not cummulative


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